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Bernard Aybouts - Blog - MiltonMarketing.com

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Post: AI-powered thermal cameras could be used to crack your passwords

AI-powered thermal cameras could be used to crack your passwords. Combining thermal cameras and AI makes it possible to crack even strong passwords.

Even long, complex passwords aren’t safe from being cracked now that researchers have created a new system that pairs thermal cameras with AI to figure them out.

Researchers at the University of Glasgow in Scotland have published a new paper(opens in new tab) detailing their ThermoSecure system that can figure out passwords based on key presses and taps on a smartphone’s screen.

As the name suggests, ThermoSecure uses thermal imaging cameras and AI to figure out 6-symbol, 8-symbol, 12-symbol and even 16-symbol passwords. The system’s accuracy depends on the length of a password but so far, it’s off to a good start.

During testing, ThermoSecure had an accuracy rate of 92% with 6-symbol passwords, 80% with 8-symbol passwords, 71% with 12-symbol passwords and 55% with 16-symbol passwords. The accuracy of the system can be improved though by taking thermal images within 30 seconds of a user entering their password.

The components used to build the researcher’s ThermoSecure system are relatively inexpensive and a $150 thermal camera could be used to achieve similar results. However, the researchers also paired the camera with an object detection technique based on Mask RCNN. While the thermal camera takes the pictures, the AI basically maps the thermal images they produce to the keys on a physical keyboard or even one on a smartphone.

How to protect your passwords from being cracked

Fortunately, ThermoSecure is a system that was developed by researchers and not hackers. Unless it falls into the wrong hands, it likely isn’t something you’ll need to worry about. Still though, now that the research has been published, hackers could try to reverse engineer ThermoSecure.

For that reason, there are several steps you can take now to protect yourself and your passwords. For starters, by using one of the best password managers, you won’t have to physically enter passwords. Instead, a password manager like 1Password or Dashlane uses autofill to enter them for you automatically.

At the same time, the way in which you enter your passwords could make them more difficult to crack by ThermoSecure or a similar system. In their paper, the researchers from the University of Glasgow note: “Users who are hunt-and-peck typists are particularly vulnerable to thermal attacks.” This means that you can protect yourself by improving your typing speed, which may be easier with one of the best mechanical keyboards. Likewise, backlit keyboards can help disguise the heat traces from your fingertips after typing out one of your passwords.

If you’re really worried though, you should consider going passwordless instead. By using biometric authentication, a physical security key or even passkeys, you can improve your overall security posture and lower your chances of getting hacked.

At the end of the day, ThermoSecure is a research project and not an actual product sold on the dark web to hackers by other cybercriminals. Instead of being a pressing threat, it’s just one that you need to look out for in the future, especially as AI becomes more advanced.

About the Author: Bernard Aybout (Virii8)

Avatar of Bernard Aybout (Virii8)
I am a dedicated technology enthusiast with over 45 years of life experience, passionate about computers, AI, emerging technologies, and their real-world impact. As the founder of my personal blog, MiltonMarketing.com, I explore how AI, health tech, engineering, finance, and other advanced fields leverage innovation—not as a replacement for human expertise, but as a tool to enhance it. My focus is on bridging the gap between cutting-edge technology and practical applications, ensuring ethical, responsible, and transformative use across industries. MiltonMarketing.com is more than just a tech blog—it's a growing platform for expert insights. We welcome qualified writers and industry professionals from IT, AI, healthcare, engineering, HVAC, automotive, finance, and beyond to contribute their knowledge. If you have expertise to share in how AI and technology shape industries while complementing human skills, join us in driving meaningful conversations about the future of innovation. 🚀